window使用telnet.exe工具批量测试端口是否开放脚本

@echo  off
for /f "delims=\n"  %%i in (F:\ip_list.txt)  do (
echo %%i
start  telnet.exe %%i  443
tasklist|findstr  /i "telnet.exe"
if  %ERRORLEVEL%  == 0 (echo %%i >> result.txt
taskkill  /F  /T /IM  telnet.exe
)
)
pause